Analysis of damage mechanisms and optimization of cut blasting design under high in-situ stresses

LX Xie, WB Lu, QB Zhang, QH Jiang, M Chen… - … and Underground Space …, 2017 - Elsevier
During excavation using the cut blasting method in deep rock masses, there are difficulties
resulting from the in-situ stress influences. This study uses numerical simulation methods to …

Numerical study on blast-induced fragmentation in deep rock mass

X Li, K Liu, J Yang, R Song - International Journal of Impact Engineering, 2022 - Elsevier
As drilling and blasting technique is applied in deep mining, its practical performance with
respect to rock fragmentation becomes a serious concern because high in-situ stress …

Effects of in-situ stresses on the fracturing of rock by blasting

C Yi, D Johansson, J Greberg - Computers and Geotechnics, 2018 - Elsevier
Blasting is widely applied in deep rock excavation. The effect of in-situ stresses on the
fracturing of rock due to blasting was investigated. A theoretical model was used to explain …

Numerical study on the behavior of blasting in deep rock masses

X Li, Z Zhu, M Wang, D Wan, L Zhou, R Liu - Tunnelling and Underground …, 2021 - Elsevier
High in-situ stress can limit the generation of rock fractures induced by blasting, which
usually shows different states of rock fragmentation with those under low-stress conditions …

Effect of confining pressure on damage accumulation of rock under repeated blast loading

H Wang, Z Wang, J Wang, S Wang, H Wang… - International Journal of …, 2021 - Elsevier
In-situ stress has complex impacts on the blasting excavation of rock mass, but the effect of
confining pressure on the crack propagation under repeated blast loading is still unclear …

Investigation on radial fracturing around borehole under combined static stress and blasting

X Li, K Liu, Y Sha, J Yang, S Ma, Z Hong - Theoretical and Applied Fracture …, 2023 - Elsevier
Blast-induced radial fracturing is generally subjected to geo-stress. This study
experimentally, theoretically and numerically investigates the radial fracturing behaviours …

[HTML][HTML] Comparison of selected blasting constitutive models for reproducing the dynamic fragmentation of rock

M Kucewicz, P Baranowski, Ł Mazurkiewicz… - International Journal of …, 2023 - Elsevier
Understanding the behavior of rock under blast-and shock-induced loadings requires a high-
fidelity constitutive model. The present paper provides a detailed comparison study of three …

Safety assessment of buried pressurized gas pipelines subject to blasting vibrations induced by metro foundation pit excavation

N Jiang, B Zhu, X He, C Zhou, X Luo, T Wu - Tunnelling and Underground …, 2020 - Elsevier
Ensuring the safety of adjacent pressure gas pipelines is a key issue in the blasting
excavation of foundation pits in complex urban environments. In this paper, the blasting …

Modeling study of cumulative damage effects and safety criterion of surrounding rock under multiple full-face blasting of a large cross-section tunnel

L Ji, C Zhou, S Lu, N Jiang, H Li - … Journal of Rock Mechanics and Mining …, 2021 - Elsevier
A blast-induced damage model integrating the tensile damage model with the Drucker-
Prager yield condition is established. Based on the excavation of a large cross-section …

Experimental results of blast-induced cracking fractal characteristics and propagation behavior in deep rock mass

C Ding, R Yang, L Yang - International Journal of Rock Mechanics and …, 2021 - Elsevier
Herein, static stress is used to simulate high in-situ stress in a deep rock mass. The effect of
this stress on the fractal characteristics and propagation behavior of blast-induced cracking …